potter



@uiten tatrs getraut @Him Letters Patent No. 80,214, lated July 21, 1868.

IMPROVEMENT IN THILL-GOUPLING.

@Le Srlpbnlt nfrrnhtrn time tttttrs fflxtent rmt uniting met nf the rane.

TO ALL WHOM IT MAY CONCERN:

Beit known that I, ISAAC R. POTTER, of Dartmouth, in the county of Bristol, in the State of Massachu-` setts, have invented a. new and improved TMll-Coupling, by which thills of carriages may be easily and qnicklyattached and detached; and I do hereby declare that the following is a'full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention consists in forming onejaw ofthe clip with a slot, and with a. projection on the end, and the jthill-iron with a. projection on the under side, and 'with an arbor screwed or otherwise secured in the end, the ends of which arbor project on either side, and 'it into corresponding holes in eachjaw of the clip, and a. spring to held the coupling more firmly in connection.

Figure 1 is a perspective view of my invention, connected'. l Figure 2 is a.` longitudinal section, showinpr the form of thill-iron and spring.

1. A' is the thill; Bl, axle-tre'e; Cl, clip; D1, thill-iron; El, spring; al, projection on under side 'of thill-iren; c1, projection on jaw of clip; dl, one end of arbor; g, slot. l

Fig. v2. A2, thillyB, axle-tree; 02, clip; D2, thill-iron; E2, spring; FZ, bar forming under side of clip; G2 G2, nuts; a2, projection on'thill-iron; d2, arbor.

The end of arhor, not shown, is as long as the thickness ot' projection el. The end `shoivn is double the j. length of the other l l 1 Operation.

' The clip, thill-iron, and spring being made and applied, as shown and described, the application and operation may be noted. When it is desirel to attach the thills, they are raised till the inner side of' projection a1 is parallel to the top of the clip, the thills being pressed against the jaw of the clip, in and to which are the slot andprojeetion, are forced down, then laterally towards the otherjaw of the clip, forcing the other end of the arbor into its hearing, till it brings up, when the th-ills can be dropped, and will lie firmly held from lateral motion by projection al. l

By reversing this operation the thills may he` detached. In this invention I do not claim anyr device previously invented or patented for attaching thills to carriages, but, y

What I claim as myinvention, and desire to secure by Letters Patent, isv Makin;r the clip Gl with projection el, and slot g on and in one jaw ollsazne, and the thillliren D2 with pro-V jection a2 and arbor di, made and operating substantially as and for the purpose specified.

ISAAC R. POTTER.

Witnesses:

Tn. E. M. WHITE, Jxo. DAVIS. 

